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High molecular weight design delivering excellent film hardness and mechanical durability.
Low viscosity in solvent-based systems enabling efficient processing and high-solids formulations.
Outstanding chemical resistance, particularly to aliphatic hydrocarbons and mild solvents.
Excellent compatibility with melamine-formaldehyde crosslinkers for thermoset coating applications.
Consistent batch-to-batch reproducibility supported by Evonik’s stringent quality control standards.
Automotive OEM clearcoats and topcoats requiring high gloss and long-term weather stability.
Industrial coil coatings for pre-painted metal substrates in architectural and appliance applications.
General-purpose can coatings for food and beverage containers with good flexibility and adhesion.
High-performance wood finishes where hardness, mar resistance, and clarity are critical.
Powder coating base resins for hybrid and pure polyester systems demanding balanced flow and cure response.
| Chemical Type | Saturated polyester resin |
| Product Form | Flakes or granules (solvent-free) |
| Appearance | White to off-white solid |
| Acid Value | 18–22 mg KOH/g |
| Hydroxyl Value | 30–36 mg KOH/g |
| Gardner Color | ≤ 3 |
| Melt Point | 65–72 °C |
| Primary Applications | Thermoset coatings, powder coatings, coil coatings, automotive clearcoats |
Q1: What is the primary application area for DYNAPOL S 341 HV?
A: DYNAPOL S 341 HV is primarily used as a high-viscosity saturated polyester resin in solvent-based and high-solids coil coating and general industrial coatings, where excellent gloss retention, hardness development, and chemical resistance are required.
Q2: Is DYNAPOL S 341 HV suitable for low-VOC or high-solids formulations?
A: Yes — its high molecular weight and low volatile organic content make it well-suited for high-solids coating systems aiming to reduce solvent emissions while maintaining film integrity and flow properties.
Q3: How does DYNAPOL S 341 HV differ from lower-viscosity DYNAPOL polyester resins?
A: DYNAPOL S 341 HV offers higher melt and solution viscosity, enabling improved film build and sag resistance in demanding industrial applications — particularly where extended baking cycles or high-film-thickness performance is needed.
Q4: Can DYNAPOL S 341 HV be crosslinked with melamine-formaldehyde resins?
A: Yes — it is fully compatible with standard amino resins and is commonly formulated with melamine-formaldehyde crosslinkers to deliver robust thermoset films with enhanced durability, flexibility, and cure response at typical industrial baking temperatures.
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